Payload fairing separation system

Abstract

The invention is a payload fairing separation system that is resettable and operates in two stages. The system includes releasable, resettable seam connectors that hold the fairing together in combination with releasable point connectors. At the time of separation, the seam connectors release first, and then the point connectors release. This allows the fairing to separate cleanly at a precise time, without using pyrotechnic charges, and with low shock to the payload.

Description

[0001] This application is a continuation of provisional application No. 60 / 477,536 filed on Jun. 11, 2003, titled “Two-stage, resettable, non-pyrotechnic payload separation system”.BACKGROUND OF THE INVENTION [0002] The invention relates to the field of separation systems for orbital launch vehicle payload fairings and the like and, in particular, to a separation system that does not include pyrotechnics. [0003] Description Of Related Art [0004] Payload fairings are used to protect the spacecraft or other payload while it is being transported into orbit on a rocket. Without a fairing, the spacecraft atop the rocket would be subjected to large aerodynamic loads. The fairing blocks the aerodynamic loads, and transmits forces down to the rocket. [0005] Once the rocket has left the atmosphere, the payload fairing is typically jettisoned. It is preferably jettisoned before the rocket reaches orbit, in order to reduce the amount of mass the rocket must launch into orbit. If the payload f...

AI Technical Summary

Benefits of technology

[0028] During the time the vehicle is traveling through the atmosphere, the payload fairing is used to shield the payload from aerodynamic forces. Once the vehicle has left the atmosphere, the payload fairing may be jettisoned to minimize the extra mass the vehicle is carrying.

[0029] By using a combination of point connection devices and seam connectors, the seam connectors can be built so that they do not have to release instantaneously. For example, the disengagement mechanism for the seam connectors could consist of a motor driving a gear reduction system. With proper gearing, such a disengagement mechanism can insert a significant amount of force on the interlock, with only a modest continuous power input.

[0033] This separation system has several advantages. It can be transported easily. It is less expensive to work with because it has no explosives. The mechanism can be tested repeatedly, and the same mechanism flies. This should improve reliability. It can be activated to easily disassemble the fairing, and then easily reset. It can also be sealed at the customer's site and filled with inert gas, then transported to the launch facility and launched. This reduces operation costs by not requiring a clean room at the launch facility. It also has the advantage that it releases gently, with no high shock loads to the payload.

Problems solved by technology

With proper gearing, such a disengagement mechanism can insert a significant amount of force on the interlock, with only a modest continuous power input.

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